|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
dosage dos·age (dō'sĭj)
Administration of a therapeutic agent in prescribed amounts.
Determination of the amount to be so administered.
The amount so administered.